| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageGenerator.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPicture.h" |
| #include "include/core/SkPictureRecorder.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/GrRecordingContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/gpu/ganesh/GrTypesPriv.h" |
| #include "src/gpu/ganesh/GrRecordingContextPriv.h" |
| #include "src/gpu/ganesh/GrSamplerState.h" |
| #include "src/gpu/ganesh/GrTextureProxy.h" |
| #include "src/gpu/ganesh/SurfaceContext.h" |
| #include "src/image/SkImage_Base.h" |
| #include "src/image/SkImage_Gpu.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| class GrRecordingContext; |
| |
| static void draw_something(SkCanvas* canvas, const SkRect& bounds) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(SK_ColorRED); |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(10); |
| canvas->drawRect(bounds, paint); |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setColor(SK_ColorBLUE); |
| canvas->drawOval(bounds, paint); |
| } |
| |
| /* |
| * Exercise drawing pictures inside an image, showing that the image version is pixelated |
| * (correctly) when it is inside an image. |
| */ |
| class ImagePictGM : public skiagm::GM { |
| sk_sp<SkPicture> fPicture; |
| sk_sp<SkImage> fImage0; |
| sk_sp<SkImage> fImage1; |
| public: |
| ImagePictGM() {} |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("image-picture"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(850, 450); |
| } |
| |
| void onOnceBeforeDraw() override { |
| const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100); |
| SkPictureRecorder recorder; |
| draw_something(recorder.beginRecording(bounds), bounds); |
| fPicture = recorder.finishRecordingAsPicture(); |
| |
| // extract enough just for the oval. |
| const SkISize size = SkISize::Make(100, 100); |
| auto srgbColorSpace = SkColorSpace::MakeSRGB(); |
| |
| SkMatrix matrix; |
| matrix.setTranslate(-100, -100); |
| fImage0 = SkImage::MakeFromPicture(fPicture, size, &matrix, nullptr, |
| SkImage::BitDepth::kU8, srgbColorSpace); |
| matrix.postTranslate(-50, -50); |
| matrix.postRotate(45); |
| matrix.postTranslate(50, 50); |
| fImage1 = SkImage::MakeFromPicture(fPicture, size, &matrix, nullptr, |
| SkImage::BitDepth::kU8, srgbColorSpace); |
| } |
| |
| void drawSet(SkCanvas* canvas) const { |
| SkMatrix matrix = SkMatrix::Translate(-100, -100); |
| canvas->drawPicture(fPicture, &matrix, nullptr); |
| canvas->drawImage(fImage0.get(), 150, 0); |
| canvas->drawImage(fImage1.get(), 300, 0); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->translate(20, 20); |
| |
| this->drawSet(canvas); |
| |
| canvas->save(); |
| canvas->translate(0, 130); |
| canvas->scale(0.25f, 0.25f); |
| this->drawSet(canvas); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(0, 200); |
| canvas->scale(2, 2); |
| this->drawSet(canvas); |
| canvas->restore(); |
| } |
| |
| private: |
| using INHERITED = skiagm::GM; |
| }; |
| DEF_GM( return new ImagePictGM; ) |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static std::unique_ptr<SkImageGenerator> make_pic_generator(GrDirectContext*, |
| sk_sp<SkPicture> pic) { |
| SkMatrix matrix; |
| matrix.setTranslate(-100, -100); |
| return SkImageGenerator::MakeFromPicture({ 100, 100 }, std::move(pic), &matrix, nullptr, |
| SkImage::BitDepth::kU8, |
| SkColorSpace::MakeSRGB()); |
| } |
| |
| class RasterGenerator : public SkImageGenerator { |
| public: |
| RasterGenerator(const SkBitmap& bm) : SkImageGenerator(bm.info()), fBM(bm) |
| {} |
| |
| protected: |
| bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, |
| const Options&) override { |
| SkASSERT(fBM.width() == info.width()); |
| SkASSERT(fBM.height() == info.height()); |
| return fBM.readPixels(info, pixels, rowBytes, 0, 0); |
| } |
| private: |
| SkBitmap fBM; |
| }; |
| static std::unique_ptr<SkImageGenerator> make_ras_generator(GrDirectContext*, |
| sk_sp<SkPicture> pic) { |
| SkBitmap bm; |
| bm.allocN32Pixels(100, 100); |
| SkCanvas canvas(bm); |
| canvas.clear(0); |
| canvas.translate(-100, -100); |
| canvas.drawPicture(pic); |
| return std::make_unique<RasterGenerator>(bm); |
| } |
| |
| class TextureGenerator : public SkImageGenerator { |
| public: |
| TextureGenerator(GrRecordingContext* rContext, const SkImageInfo& info, sk_sp<SkPicture> pic) |
| : SkImageGenerator(info) |
| , fRContext(SkRef(rContext)) { |
| |
| sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(rContext, SkBudgeted::kYes, info, 0, |
| kTopLeft_GrSurfaceOrigin, nullptr)); |
| if (surface) { |
| surface->getCanvas()->clear(0); |
| surface->getCanvas()->translate(-100, -100); |
| surface->getCanvas()->drawPicture(pic); |
| sk_sp<SkImage> image(surface->makeImageSnapshot()); |
| std::tie(fView, std::ignore) = as_IB(image)->asView(rContext, GrMipmapped::kNo); |
| } |
| } |
| protected: |
| GrSurfaceProxyView onGenerateTexture(GrRecordingContext* rContext, |
| const SkImageInfo& info, |
| GrMipmapped mipmapped, |
| GrImageTexGenPolicy policy) override { |
| SkASSERT(rContext); |
| SkASSERT(rContext->priv().matches(fRContext.get())); |
| |
| if (!fView) { |
| return {}; |
| } |
| |
| SkASSERT_RELEASE(info.dimensions() == fView.proxy()->dimensions()); |
| |
| if (policy == GrImageTexGenPolicy::kDraw) { |
| return fView; |
| } |
| auto budgeted = policy == GrImageTexGenPolicy::kNew_Uncached_Unbudgeted ? SkBudgeted::kNo |
| : SkBudgeted::kYes; |
| return GrSurfaceProxyView::Copy( |
| fRContext.get(), |
| fView, |
| mipmapped, |
| SkIRect::MakeWH(info.width(), info.height()), |
| SkBackingFit::kExact, |
| budgeted, |
| /*label=*/"SurfaceProxyView_GenerateTexture"); |
| } |
| |
| private: |
| sk_sp<GrRecordingContext> fRContext; |
| GrSurfaceProxyView fView; |
| }; |
| |
| static std::unique_ptr<SkImageGenerator> make_tex_generator(GrDirectContext* dContext, |
| sk_sp<SkPicture> pic) { |
| if (!dContext) { |
| return nullptr; |
| } |
| |
| const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
| |
| return std::make_unique<TextureGenerator>(dContext, info, pic); |
| } |
| |
| class ImageCacheratorGM : public skiagm::GM { |
| typedef std::unique_ptr<SkImageGenerator> (*FactoryFunc)(GrDirectContext*, sk_sp<SkPicture>); |
| |
| SkString fName; |
| FactoryFunc fFactory; |
| sk_sp<SkPicture> fPicture; |
| sk_sp<SkImage> fImage; |
| sk_sp<SkImage> fImageSubset; |
| |
| public: |
| ImageCacheratorGM(const char suffix[], FactoryFunc factory) : fFactory(factory) { |
| fName.printf("image-cacherator-from-%s", suffix); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return fName; |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(960, 450); |
| } |
| |
| void onOnceBeforeDraw() override { |
| const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100); |
| SkPictureRecorder recorder; |
| draw_something(recorder.beginRecording(bounds), bounds); |
| fPicture = recorder.finishRecordingAsPicture(); |
| } |
| |
| bool makeCaches(GrDirectContext* dContext) { |
| { |
| auto gen = fFactory(dContext, fPicture); |
| if (!gen) { |
| return false; |
| } |
| fImage = SkImage::MakeFromGenerator(std::move(gen)); |
| if (!fImage) { |
| return false; |
| } |
| SkASSERT(fImage->dimensions() == SkISize::Make(100, 100)); |
| } |
| |
| { |
| const SkIRect subset = SkIRect::MakeLTRB(50, 50, 100, 100); |
| |
| // We re-create the generator here on the off chance that making a subset from |
| // 'fImage' might perturb its state. |
| auto gen = fFactory(dContext, fPicture); |
| if (!gen) { |
| return false; |
| } |
| fImageSubset = SkImage::MakeFromGenerator(std::move(gen))->makeSubset(subset, dContext); |
| if (!fImageSubset) { |
| return false; |
| } |
| SkASSERT(fImageSubset->dimensions() == SkISize::Make(50, 50)); |
| } |
| |
| return true; |
| } |
| |
| static void draw_placeholder(SkCanvas* canvas, SkScalar x, SkScalar y, int w, int h) { |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| SkRect r = SkRect::MakeXYWH(x, y, SkIntToScalar(w), SkIntToScalar(h)); |
| canvas->drawRect(r, paint); |
| canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), paint); |
| canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), paint); |
| } |
| |
| static void draw_as_bitmap(GrDirectContext* dContext, SkCanvas* canvas, SkImage* image, |
| SkScalar x, SkScalar y) { |
| SkBitmap bitmap; |
| if (as_IB(image)->getROPixels(dContext, &bitmap)) { |
| canvas->drawImage(bitmap.asImage(), x, y); |
| } else { |
| draw_placeholder(canvas, x, y, image->width(), image->height()); |
| } |
| } |
| |
| static void draw_as_tex(SkCanvas* canvas, SkImage* image, SkScalar x, SkScalar y) { |
| // The gpu-backed images are drawn in this manner bc the generator backed images |
| // aren't considered texture-backed |
| auto [view, ct] = as_IB(image)->asView(canvas->recordingContext(), GrMipmapped::kNo); |
| if (!view) { |
| // show placeholder if we have no texture |
| draw_placeholder(canvas, x, y, image->width(), image->height()); |
| return; |
| } |
| SkColorInfo colorInfo(GrColorTypeToSkColorType(ct), |
| image->alphaType(), |
| image->refColorSpace()); |
| // No API to draw a GrTexture directly, so we cheat and create a private image subclass |
| sk_sp<SkImage> texImage(new SkImage_Gpu(sk_ref_sp(canvas->recordingContext()), |
| image->uniqueID(), |
| std::move(view), |
| std::move(colorInfo))); |
| canvas->drawImage(texImage.get(), x, y); |
| } |
| |
| void drawRow(GrDirectContext* dContext, SkCanvas* canvas, float scale) const { |
| canvas->scale(scale, scale); |
| |
| SkMatrix matrix = SkMatrix::Translate(-100, -100); |
| canvas->drawPicture(fPicture, &matrix, nullptr); |
| |
| // Draw the tex first, so it doesn't hit a lucky cache from the raster version. This |
| // way we also can force the generateTexture call. |
| |
| draw_as_tex(canvas, fImage.get(), 150, 0); |
| draw_as_tex(canvas, fImageSubset.get(), 150+101, 0); |
| |
| draw_as_bitmap(dContext, canvas, fImage.get(), 310, 0); |
| draw_as_bitmap(dContext, canvas, fImageSubset.get(), 310+101, 0); |
| } |
| |
| DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override { |
| auto dContext = GrAsDirectContext(canvas->recordingContext()); |
| if (!this->makeCaches(dContext)) { |
| errorMsg->printf("Could not create cached images"); |
| return DrawResult::kSkip; |
| } |
| |
| canvas->save(); |
| canvas->translate(20, 20); |
| this->drawRow(dContext, canvas, 1.0); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(20, 150); |
| this->drawRow(dContext, canvas, 0.25f); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(20, 220); |
| this->drawRow(dContext, canvas, 2.0f); |
| canvas->restore(); |
| |
| return DrawResult::kOk; |
| } |
| |
| private: |
| using INHERITED = skiagm::GM; |
| }; |
| |
| DEF_GM( return new ImageCacheratorGM("picture", make_pic_generator); ) |
| DEF_GM( return new ImageCacheratorGM("raster", make_ras_generator); ) |
| DEF_GM( return new ImageCacheratorGM("texture", make_tex_generator); ) |